JPH11167803A - Head lamp for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a required reflector effective reflecting area and heighten a degree of freedom of lamp fixture design, without interference between a composite reflector and an extension, even when front aperture parts of a pair of bilateral reflectors composing the composite reflector are positioned so as to be adjacent or overlapped each other from the frontal view of the lamp fixture, in a head lamp for a vehicle with the composite reflector. SOLUTION: An air space part perforated in a connecting part 38 is formed in the vertical wall connecting part 38 which is formed between a pair of reflectors 18, 20 and is extended in the approximately back-and-forth direction in a composite reflector 16. Thus, the interference of the connecting part 38 of the composite reflector 16 with an extension 30 is prevented even when the composite reflector 16 is tilted by aiming adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlight provided with a so-called synthetic reflector.

[0002]

2. Description of the Related Art In many vehicle headlamps, an extension is provided in the vicinity of the front of a reflector so as to surround a front opening of the reflector due to a requirement of a lamp design. The shape is set so that it does not interfere with the reflector even when tilted by adjustment.

A four-lamp headlight or the like is provided with a pair of reflectors each having a light source bulb attached thereto. These two reflectors are arranged side by side and are offset in the front-rear direction. In many cases, it is arranged as Further, the two reflectors are often integrally formed as a composite reflector.

[0004]

When an extension is to be provided in a vehicle headlamp provided with such a composite reflector, the following may be required depending on the positional relationship between the pair of reflectors constituting the composite reflector. Such a problem arises.

[0005] That is, in the above-mentioned composite reflector, a connection is formed between a pair of reflectors constituting the composite reflector. Therefore, the extension needs to have a shape that does not interfere with the connection.

However, when the front openings of the reflectors are close to or overlap with each other when viewed from the front of the lamp, it is desirable to provide the extension so as to avoid interference with the connecting portion. In addition, the position of the peripheral edge of the opening of the extension facing the front opening of the rear reflector has to be set to a position shifted from the original position toward the optical axis of the rear reflector. For this reason, the effective reflection area of the rear-side reflector is reduced, and the light distribution performance of the lamp is correspondingly reduced, and furthermore, there is a problem that the originally intended lamp design cannot be obtained.

The present invention has been made in view of such circumstances, and in a vehicle headlamp provided with a synthetic reflector, a front opening of a pair of left and right reflectors constituting the synthetic reflector has a lamp. Even in a case where the reflectors are close to each other or overlap each other when viewed from the front, a required reflector effective reflection area can be secured without causing interference between the composite reflector and the extension. It is an object of the present invention to provide a vehicular headlamp capable of increasing the power.

[0008]

According to the present invention, the above-mentioned object is achieved by forming a gap at a connection portion between the reflectors in the composite reflector.

That is, according to the present invention, there is provided a composite reflector in which a pair of left and right reflectors each having a light source bulb attached thereto are integrally formed so as to be offset in the front-rear direction. An extension provided in the vicinity of the front of the combined reflector so as to surround the front opening of each of the reflectors, wherein the front openings of the reflectors are close to each other when viewed from the front of the lamp. Alternatively, it is characterized by being formed so as to overlap with each other, and a gap portion penetrating the connection portion is formed at a connection portion between the two reflectors in the synthetic reflector.

[0010] The "gap" is formed at the connection between the two reflectors so that the gap is formed at the front opening of the rear reflector as compared with the case where the gap is not formed. The shape, size, and the like of the extension are not particularly limited as long as the position of the opening peripheral edge of the extension can be set closer to the connection portion.

[0011]

As described above, the vehicular headlamp according to the present invention has a left and right offset in the front-rear direction.
It has a synthetic reflector consisting of a pair of reflectors,
Since the front openings of the respective reflectors are formed so as to be close to or overlap each other when viewed from the front of the lamp, a vertical wall-like connecting portion extending substantially in the front-rear direction is formed between the two reflectors of the composite reflector. In other words, since the connection portion is formed with a void portion penetrating the connection portion, an extension is provided near the front of the synthetic reflector so as to surround the front opening of each of the reflectors. Regardless, even when the combined reflector tilts due to aiming adjustment,
Interference between the connecting portion of the synthetic reflector and the extension can be prevented. Thus, it is possible to set the shape of the extension to a shape in accordance with the lamp design originally intended.

Therefore, according to the present invention, in a vehicle headlamp provided with a synthetic reflector, a position in which front openings of a pair of reflectors constituting the synthetic reflector are close to or overlap each other when viewed from the front of the lamp. Even in such a case, the required reflector effective reflection area can be ensured without causing interference between the combined reflector and the extension, and the degree of freedom of the lamp design can be increased.

[0013] In the above structure, as described in claim 2, if a reinforcing rib is formed in a portion of the connecting portion near the gap, the connecting portion due to the formation of the gap is formed. A decrease in rigidity can be prevented or minimized.

From the viewpoint of securing the rigidity of the connecting portion,
It is preferable that the contour of the gap be set in a rounded shape.

In the present invention, the position of the opening peripheral portion of the extension facing the opening of the front surface of the rear reflector can be made closer to the connection portion than the case where the space portion does not exist. By utilizing this, it is also possible to provide the extension so as to three-dimensionally intersect with the synthetic reflector in the gap as described in claim 3. By doing so, it is easier to secure the effective reflection area of the rear reflector, and it is possible to impart novelty to the lamp design.

The shape of each "opening edge" of the extension facing the front opening of each reflector is not particularly limited, and may be the same as or different from the shape of the front opening of each reflector. Although it may be shaped, as described in claim 4, if at least a portion on the connection portion side in each of the “opening peripheral portions” is formed in an arc shape, the following operation and effect can be obtained. Can be.

That is, the shape of the front opening of each of the reflectors often does not become a single curve in order to ensure the effective reflection area of each of the reflectors as large as possible. If the shape of the "peripheral portion" is set to be the same as the shape of the front opening, the design between the two reflectors gives an intricate impression, which is not preferable. Therefore, by forming at least a portion on the connection portion side in each of the “opening edge portions” in an arc shape, the design between the two reflectors can be finished in a refreshing feeling.

The "extension" may be constituted by a single member. However, as described in claim 5, the extension main body and the peripheral portions of the openings attached to the extension main body are connected to each other. The following operation and effect can be obtained by using a pair of ring members.

That is, in many cases, it is easier to form the mold for forming the above-mentioned extension by inclining it in the left-right direction with respect to the front-back direction. It is preferable in terms of lamp design to form the lamp so as to face the front-back direction. Therefore, if the extension is constituted by the extension body and the pair of ring members, it is possible to meet the above conflicting demands. In addition, it is possible to make the color and surface treatment different between the extension body and each of the ring members, thereby further increasing the degree of freedom of the lamp design.

Here, each of the above-mentioned "ring members" may be a complete ring-shaped member extending over the entire circumference, or may be an incomplete ring-shaped member partially missing.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a vehicle headlamp according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II.

As shown in these figures, a vehicle headlamp 10 according to the present embodiment is a right-side lamp of a four-lamp type headlamp, and includes a space formed by a lens 12 and a lamp body 14. In addition, a combined reflector 16 is provided so as to be tiltable in the vertical and horizontal directions.

The synthetic reflector 16 is an injection-molded resin product, and is formed by integrally forming a pair of left and right reflectors 18 and 20. Each of the reflectors 18 and 20 has a light source bulb 22, 24 and Shade 26,2
8 is attached. Both reflectors 18, 20
Are arranged such that the reflector 18 on the outer side in the vehicle width direction is offset rearward with respect to the reflector 20 on the inner side in the vehicle width direction, and the front openings 18a,
20a are formed to be close to each other when viewed from the front of the lamp.

Light sources 22 and 24 and shades 26 and 28 are attached to the reflectors 18 and 20, respectively. The lens 12 is a transparent lens, and the reflectors 18 and 20 have a light distribution control function.

In the vicinity of the front of the synthetic reflector 16,
Front openings 18a, 20 of each of the reflectors 18, 20
An extension 30 is provided so as to surround “a”. The extension 30 includes an extension main body 32 and a pair of ring members 34 and 36 attached to the extension main body 32. The ring members 34 and 36 allow the extension 30 to be connected to the front openings 18a and 20a of the reflectors. It constitutes the opening peripheral part facing.

FIG. 3 is a front view showing the composite reflector 16 as a single unit, and FIG. 4 is a perspective view thereof.

As shown in these figures, in the synthetic reflector 16, the pair of right and left reflectors 18,
Between the two reflectors 20, a connecting portion 38 connecting the reflectors 18 and 20 is formed in a standing wall shape extending substantially in the front-rear direction. In this connecting portion 38, a gap portion 40 penetrating the connecting portion 38 is provided. Is formed. The cavity 40 is formed in a substantially rectangular shape when viewed from the side of the lamp, and when viewed from the front of the lamp, the front opening 20a of the reflector 20 is formed.
, And the upper end is formed in a slightly widened shape.

Since the connection portion 38 has the gap 40, the upper connection portion 38A and the lower connection portion 38B
And separated into As shown in FIG. 5, a reinforcing rib 38Aa is formed at the upper end of the flat portion of the upper connecting portion 38A so as to extend substantially in the front-rear direction. The portion 38A is reinforced.

As shown in FIG. 6, the synthetic reflector 1
The mold for molding 6 forms the mold division plane PL in the gap 40, and forms the gap 40 by opening the mold in the front-rear direction (A and B directions in the drawing).
It is constructed as a so-called cut-off type. At this time, the mold structure is set so that a corner R is formed at each of the upper and lower corners at the front end of the gap portion 40 in the connection portion 38. Thus, the rigidity of the connection portion 38 is improved.

FIG. 7 is a front view showing the extension body 32 of the extension 30 as a single item.
Is a perspective view thereof.

As shown in these figures, the extension main body 32 has a surface shape along the lens 12 and has a short cylindrical opening 42 at a position corresponding to each of the reflectors 18 and 20. 44 are formed. Arc-shaped flanges 42a, 44a are formed at the rear end portions of the inner peripheral surfaces of the openings 42, 44, respectively. And
As shown by a two-dot chain line in FIG.
a, 44a so that each of the ring members 3
4 and 36 are fixed to the extension main body 32. However, no flange is formed at the rear end of the inner peripheral surface of the wall portion 42b on the inner side in the vehicle width direction of the opening portion 42, and as shown in FIG. It comes into contact with the rear end surface of the wall portion 42b.

Each of the ring members 34 and 36 has a cross section substantially V
The optical axes Ax1 and Ax of the reflectors 18 and 20 are in the shape of a letter.
Although the ring member 34 extends along an arc shape centered at 2, the ring member 34 has an
6 is missing the lower end. The wall surface 42b of the opening 42 is formed in a conical shape that is displaced inward in the vehicle width direction from the front end to the rear end so as to maintain the arc shape of the ring member 34. I have.

As shown in FIGS. 2 and 6, the extension 30 is provided so as to three-dimensionally intersect with the synthetic reflector 16 in the gap 40. That is, the extension 30 is provided such that a part of the wall surface 42 b of the extension main body 32 and a part of the ring member 34 enter the gap 40.

As described in detail above, the vehicle headlamp 10 according to the present embodiment is provided with the composite reflector 16 composed of a pair of left and right reflectors 18 and 20 offset in the front-rear direction. , 20 are formed so as to be close to each other when viewed from the front of the lamp.
A vertical wall-shaped connecting portion 38 extending substantially in the front-rear direction is formed between the reflectors 18 and 20. Since the connecting portion 38 has a gap 40, the composite reflector 16 is formed. Extension 30 near the front of
Are the front openings 18a, 2a of the reflectors 18, 20,
Despite being provided to surround 0a,
Even when the combined reflector 16 is tilted due to the aiming adjustment, the connecting portion 38 of the combined reflector 16
And the extension 30 can be prevented from interfering with each other. Thus, it is possible to set the shape of the extension 30 to a shape according to the lamp design originally intended.

Therefore, according to the present embodiment, in a vehicle headlamp provided with a composite reflector, the front openings of the pair of reflectors constituting the composite reflector are close to or overlap each other when viewed from the front of the lamp. Even in the case of a positional relationship, a required reflector effective reflection area can be secured without causing interference between the combined reflector and the extension, and the degree of freedom in lamp design can be increased.

In addition, in the present embodiment, since the reinforcing ribs 38Aa are formed in the upper connecting portion 38A of the connecting portion 38, the rigidity of the connecting portion 38 due to the formation of the gap 40 is prevented. Alternatively, it can be minimized. Further, since the corner R is formed at each of the upper and lower corners at the front end of the gap portion 40 in the connection portion 38, the rigidity of the connection portion 38 can be improved.

Further, in this embodiment, since the extension 30 is provided so as to three-dimensionally intersect the synthetic reflector 16 in the gap 40, the effective reflection area of the reflector 18 is further ensured. It becomes easy and it is possible to give the lamp design a novelty.

Further, in the present embodiment, the extension 30 is constituted by the extension body 32 and the pair of ring members 34 and 36 attached to the extension body 32. The effect can be obtained.

That is, the extension body 32
Is formed with a conical wall surface portion 42b, so that the direction in which the mold for forming the extension body 32 is removed needs to be inclined outward in the vehicle width direction with respect to the front-rear direction. Even in such a case, each of the ring members 34 and 36 can be provided so as to face the front-back direction, thereby improving the lamp design. Further, between the extension body 32 and each of the ring members 34 and 36, the color and surface treatment can be changed to improve the lamp design.

Further, by providing the ring members 34 and 36, the curved portions of the front openings 18a and 20a of the reflectors 18 and 20 are set to be slightly distorted with respect to the arc shape. Regardless, the extension 3 facing each of the front openings 18a, 20a
The periphery of each of the openings 0 can be formed in an arc shape, thereby improving the lamp design. In particular, although the design tends to enter between the two reflectors 18 and 20, it can be finished in a refreshing feeling.

[Brief description of the drawings]

FIG. 1 is a front view showing a vehicle headlamp according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a front view showing the synthetic reflector of the embodiment as a single item.

FIG. 4 is a perspective view showing the composite reflector as a single item.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 3;

FIG. 7 is a front view showing the extension body of the embodiment as a single item.

FIG. 8 is a perspective view showing the extension main body as a single item.

[Explanation of symbols]

 Reference Signs List 10 vehicle headlamp (lamp) 12 lens 14 lamp body 16 synthetic reflector 18, 20 reflector 18a, 20a front opening 22, 24 light source bulb 26, 28 shade 30 extension 32 extension body 34, 36 ring member 38 connection 38A Upper connection portion 38B Lower connection portion 38Aa Reinforcement rib 40 Void portion 42, 44 Opening portion 42a, 44a Flange 42b Wall surface portion Ax1, Ax2 Optical axis of reflector PL-type split surface

Claims (5)

[Claims] 1. A left and right one to which a light source bulb is attached, respectively.
A pair of reflectors, a combined reflector integrally formed so as to be offset in the front-rear direction, and an extension provided in the vicinity of the front of the combined reflector so as to surround the front opening of each of the reflectors. In the vehicle headlamp, the front openings of the reflectors are formed so as to be close to or overlap with each other when viewed from the front of the lamp. A vehicular headlight, wherein a void is formed through the vehicle headlight. 2. The vehicle headlight according to claim 1, wherein a reinforcing rib is formed in a portion of the connection portion near the gap. 3. The device according to claim 1, wherein the extension is provided so as to three-dimensionally intersect the synthetic reflector in the gap.
The vehicle headlight described. 4. An arcuate portion of at least a portion of each of the extensions facing the front opening of each of the reflectors on the side of the connection portion is formed in an arc shape. Vehicle headlight according to the above. 5. The vehicle front according to claim 4, wherein the extension comprises an extension main body and a pair of ring members attached to the extension main body and constituting the peripheral portions of the openings. Illumination.